Odpowiedzi

2009-11-26T19:37:50+01:00
(a+7)²=a²+14a+49
(1,2+b)²=1,44+2,4b+b²
(c+1⅔)²=c²+10/3c+25/9
(√5+d)²=5+2√5d+d²
(3k+2/5)²=9k²+12/5k+4/25
(5m+6n)²=25m²+60mn+36n²